In a big forest some distance away from the Sōsuke clan fast shadows could be seen jumping from tree to tree at insane speeds, moving away from the clan.
Taking a closer look at those shadows one could see that they were people, and about a thousand of them at that, from very old to very young, all of them were wearing armours of different colours and each carrying different weapons, they all had serious looks on their faces and no one said a thing.
'jeez, relax a little people, I can almost feel the tension solidifying in the air it's just war.' Aizen thought sarcastically.
'although now that am thinking about it I've always been like this.' he thought as he jumped on a tree running in the middle of the group, 'even during my first war on earth while everyone was nervous and having mental breakdowns I was just sitting there, observing them wondering why I wasn't feeling anything, wondering why am I so different from them.' he couldn't help but let his thoughts drift as he thought about his past life.
But immediately after he pulled himself out of it
'this isn't the time for this, focus Michael, just one slip up can cost me my life, and I don't want to take my chances with that weird place again.' he thought remembering the black and white spaces.
Like that they travelled from when the sun was just rising till noon, "be on your guard from now on, we've entered the battlefield the enemy could attack from anywhere." old man Yamamoto warned them as he ran in front leading them, hearing him all of them just nodded and kept running in silence.
They were currently travelling across a rocky wasteland, scouts have already been going forward and back rallying information, and it amazed Aizen how much distance they've crossed and how fast they were going, plus their endurance and stamina, reminding him again of how much different this world was from his previous one.
The speed of just normal kids, which if he had to classify them would be genin Rank, is at least 100km/h and those are just the normal ones, from there it's just a crazy rabbit hole, chunin Rank which is kids who are about 10 year old can run at f*ucking Mach 1 easily, that is the speed of freaking sound, 'i should be close to that speed without any body weights, but if I use the body flicker... Hehe, let's not even think about it.', as for jonins he still hasn't seen one running at their fastest and it gives him the shivers just thinking about it.
(An: I don't think there was a classification for ninjas at that time so the mc is just assuming what their rank would be, also the speeds are confirmed am not making stuff up lol)
In the memories of his past life, he knows that some strong ninjas can run at the speed of light, and some can even surpass it like naruto.
'the speed of light is also the speed limit of the universe, or to be more precise my previous universe, and it should be impossible to go faster than that, being able to surpass it means that am in a different universe altogether, I wonder if I can go back to...' suddenly he felt a shiver go up his spin and all the hairs on his body stood up.
thinking fast he immediately jumped to the ground and right after, in the Palace where he was standing a giant explosion took place taking with it at least a dozen of his clan members, the rest just like him due to the warning from before and their good reflexes reacted beforehand.
Just the shockwave from the explosion alone pushed him about 2m(6ft) back as his feet dug into the ground.
"ENEMY ATTACK, ASSUME BATTLE FORMATIONS, SENSORS STAY IN THE MIDDLE AND HELP THE OTHERS LOCATE THE ENEMY ." old man Yamamoto shouted at the top of his lungs
After that he singled to two other old men by his side and he said," KAZETA, ISOGUSA WITH ME." with that he disappeared from everyone's sights along with the other two old men, and before long sounds of battle could be heard coming from the distance, one could only assume he was fighting with the enemies strongest and keeping them at bay.
Right after Yamamoto's words aizen took out the chokuto on his back and held it with both hands in front of him carefully observing his surroundings.
"Enemy at my 12 o'clock about 5km(3.1mi) approaching fast." said one of the sensor ninjas
Looking in that direction which was the same one Yamamoto along with the other two leaders went to, they could soon see a small army of about a thousand shinobi approaching, there were old, young, men and women in that group, and the other army saw them too.
Both armies locked eyes with the other but no words were said, there was no need to, both sides rushed at each other, this was war, they didn't particularly hate each other, or have a bad history with one another, deep down most didn't even want to be here and fight, hell, most of them would have even made best of friends, and most of them know that this might be their last day alive, this might the last day they'll see any of their comrades or loved ones.
But none of that matters what matters is the survival of their clans, their own survival, their kids and parents, and what matters most is that two people in high positions who didn't get along have decided to send them to kill each other.
And that's what they did, after a loud crashing sound, sounds of screaming, crying, shouts and explosions could be heard from everywhere, it was utter chaos.
*BOOM* "AAGH* *SWISH* *SLASH*
In this chaos the only reason they don't attack their own clansmen is the clan symbol on their armours, the Sōsuke clan with an infinity symbol(8 flipped to the side), on their front, back and shoulder guards and the other clan with a bird sign in the same places.
But no one used any jutsus, all of them were either throwing projectiles or explosive tags.
The first thing they are thought from a young age is to conserve their chakra as much as possible as it is their lifeline and only use it when absolutely necessary, and as most battles take a long time, rarely does someone just spams jutsus.
Somewhere on that chaotic battlefield aizen was facing a kid the same age as him of his current body at least, but while he had a calm cold look on his face the kid had a fierce one, aizen could even see tears at the sides of his eyes, they were constantly clashing swords and they seemed to be equals.
'sigh, I have no problem killing, in fact, I even enjoy it sometimes, but killing kids, I can still kill one or two, but if I want to survive in this world before I even hit my teenage years I would have killed hundreds, I'll just leave those issues for future me, I can't be distracted now .' thought aizen as he looked at the kid in front of him.
He could have finished him off as soon as they clashed evident by the fact that he had the leisure to think while battling, but he delayed it just for a little bit to go through his thought process.
'time to end this.' thinking this he immediately channelled some chakra to his hands and shoulders.
He wasn't a master at chakra control, far from it in fact, but after mastering the tree and water walking techniques he was able to enhance his body with chakra, and although it was still just a little enhancement for now, he was already outclassing this kid in strength, now coupled with chakra enhancement....
Aizen deflecting the sword slash coming his way, raised his sword high up ready to swing down, seeing him do this the kid just positioned his sword in the way, ready to deflect it and counterattack like he did dozens of times till now, but this time was different.
"SURA WATCH OUT." came a shout from somewhere on the battlefield but it was already too late.
Right, when the swords connected the kid named sura opened his eyes wide, he expected the hit to be like all the previous ones but this felt like a mountain crushing down on him, he couldn't even hold on for a moment before the sword came down on his face.
"NOOOO...." his scream was cut short as the sword went from the top of his head to his throat, splitting his head in half, immediately a fountain of blood shot up along with some brain matter bathing aizen in it.
But he didn't even flinch he just turned to where he heard the shout from before to see a man in his mid-thirties staring at him with bloodshot eyes.
"YOU'RE GONNA PAY FOR THI...." before he could even finish his sentence a sword light flashed by and his head went flying.
With His head still in the air he could see his headless body, the blood still didn't even have time to rush out, 'forgive me son I couldn't avenge you.' those were his last thoughts as his head hit the ground.
"humph idiot, daring to get distracted on the battlefield." commented the black hair, blue-eyed middle-aged guy who just killed him and then looked at aizen.
"aizen was it? good job, and take this as a lesson, never lose your focus on the battlefield even if your son dies before your eyes." saying this he didn't even wait for aizen to reply before disappearing from his location.
'a jonin! Even with how high my perception had gotten due to the chakra flowing through my body and the changes to my soul I couldn't even track him, but, he is a good guy, that I can tell.' thought aizen as he turned and used his sword to block a kunai thrown at him from some enemy kid.
'This is another benefit of my soul's weird change, I am hyper-aware, even when am thinking I can still concentrate on the outside world, just like now when i blocked the kunai.' thinking so he rushed towards the new enemy.
And unlike the previous one which was just a rookie this one gave off the vibe of a trained veteran with a hard look on his face, he seemed to be about 7 years old.
No words were uttered between them, aizen blowing a smoke bomb under his feet, he took out three kunais each held between his fingers and threw them right at the enemy.
The kid have already moved backwards from where he was standing to give himself more time to react in case something happened, even though he saw that aizen was just a kid younger than him he didn't let his guard down completely, but seeing three kunais penetrate the smoke and come to his direction he couldn't help but sneer, 'humph amateur.'
Holding a kunai of his own tightly in his hand he deflected all three kunais but he couldn't help but change his expression as his hand started shaking, 'he's strong' was his only thought before he heard a sizzling sound.
Looking at the three kunai he just deflected which still haven't hit the ground and are still in the air next to him he noticed explosive tags wrapped on all three of their handles, ' maybe he's not that bad after all, but, it's still not enough.'
Jumping backwards he weaved some hand signs while still in the air and immediately after landing he placed both arms on the ground, and from right in front of him a 1.5m(4ft) earth wall came out just as the three kunais hit the ground and an explosion accrued.
Earth style: earth wall.
The wall completely protected him from the explosion before finally crumbling, and from the smoke of the crumbling wall in front of him came out aizen swinging his swords right at his opponent's neck.
'got you.' thought the kid, he was already waiting for aizen to do something like this, as just when aizen appeared and swung his sword he moved forward getting closer to aizen while at the same time avoiding the slash to his neck, immediately after he slashed his kunai upward aiming for aizen's throat, but he noticed something strange.
Aizen just kept his momentum, even his expression didn't change one bit with him being so close to him, and when his kunai touched his opponent's throat he figured out what's wrong, it went right through it, it was a clone, "FCU..." his curse was cut short as the explosive tags under his feet blew his body to a thousand pieces.
Moving under the ground aizen picked a somewhat empty space before resurfacing.
Earlier when he laid eyes on his opponent he knew that he had to finish him fast as with his experience he could tell that it would be a thought fight, so he had two options in front of him.
Either to trust his feeling and use all he had to finish him fast and use some of his chakra
Or engage in a drawn-out battle with him till he won while conserving chakra.
He chose the former, and it seemed he was right, the now dead enemy was too clever and tricky, if he had chosen to fight a drawn-out battle with him he would have tired him out, and being tired this early into the fight wasn't so good.
So he chose to sacrifice some of his chakra, first, he made the enemy think that the smoke bomb was for hiding the Kunai throw to distract him from its real purpose, and while the enemy was preoccupied with explosions he immediately
performed two fast jutsus.
first, the clone jutsu which he controlled to go after the enemy.
Second, earth style: hiding like a mole jutsu, and went underground in the enemy direction.
taking out some explosive tags and sending some chakra into them to activate them he came out of the ground right where the enemy earth wall was standing before , with the smoke resulting from the explosion hiding his presence, and right before his clone reached there he placed them there, went underground again and dipped.
'good thing he wasn't a sensor or this would have never worked, also, it was the right decision to practice weaving hand signs faster, with my previous speed I would never have had enough time to do all that.' analysing what happened and feeling satisfied that his training bore some results he picked another enemy before rushing towards them.
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